Dị ka ihe bụ isi akụrụngwa maka ihe mkpuchi, akwa agbaze agbaze agbazewo n'oge na-adịbeghị anya na-abawanye ọnụ na China, na-eru elu dị ka ígwé ojii. Ọnụ ahịa ahịa nke nnukwu mgbaze index polypropylene (PP), akụrụngwa maka akwa agbaze agbaze, agbagokwala elu, ụlọ ọrụ na-ahụ maka mmanụ ala amụbawo mgbanwe mgbanwe gaa na ihe nrịbama dị elu nke polypropylene.
Site n'ụzọ, ekwesịrị iburu n'uche na ezigbo ihe mgbaze na-agbaze bụ ihe na-emebi emebi. 2040 a na-ejikarị n'ahịa bụ ihe PP nkịtị, na ezigbo PP meltblown ihe niile na-agbanwe. Ka ọ dị ugbu a, maka obere igwe (mgbanwe extruders) na ahịa, iji ihe na-agbaze mmiri dị elu adịghị eguzosi ike. Ka igwe na-ebuwanye ibu, mmetụta dị mma nke iji ihe mgbaze agbaze dị elu PP ihe. Nsogbu dị mma nke obere igwe n'onwe ha na-akpata nnukwu akụkụ nke ihe kpatara ya. A na-eji akwa agbaze agbaze mgbe niile na-achọ iji 1500 gbazee mkpịsị aka pụrụ iche ihe mgbaze, yana mgbakwunye nke polar masterbatch na ọgwụgwọ usoro polar iji meziwanye arụmọrụ filtration.
Taa, onye nchịkọta akụkọ achịkọtara akụkọ gbasara njirimara arụmọrụ nke gbanwetụrụIhe mgbaze agbaze PP, na-atụ anya na ị ga-enyere onye ọ bụla aka. Ọ bụrụ na ịchọrọ ịmepụta akwa agbaze agbaze nke na-agbaso ụkpụrụ mba KN90, KN95, na KN99, ị ga-enwe nghọta nke usoro mmepụta dum, chọpụta ihe ndị na-adịghị mma, ma mejupụta ha. Nke mbụ, ka anyị malite site na ihe ndị na-agbaze agbaze.
Ebe mgbaze dị elu na-ezo aka na ihe PP gbazere agbaze
Ihe mkpuchi nrụpụta enweghị ike ime na-enweghị akwa spunbond na akwa agbaze agbaze, nke abụọ bụ ihe na-agbaze PP dị elu mgbe e mebiri emebi. N'ịdị elu nke nzacha agbaze nke PP eji eme akwa agbaze agbaze, ka eriri ndị ahụ na-awụpụ nke ọma, na-akawanye mma ịrụ ọrụ nzacha nke akwa agbaze agbaze. PP nwere obere molekụla dị ala yana nkesa arọ molekụla dị warara dị mfe iji mepụta eriri nwere ezigbo otu.
Ngwa maka imepụta S-layer ( akwa spunbond) nke masks bụ isi mgbaze PP nwere ntụzịaka gbazee n'etiti 35-40, ebe ihe maka imepụta M-layer (ajị agbaze agbaze) bụ ọkwa PP gbazere nke nwere akara mgbaze dị elu (1500). A pụghị ikewapụ mmepụta nke ụdị abụọ a nke nnukwu agbaze PP na isi ihe dị mkpa, nke bụ ihe na-emebi emebi peroxide.
N'ihi na n'ozuzu ala gbazee index nke nkịtị PP, ya flowability na gbazee ala adịghị mma, nke na-amachi ya ngwa na ụfọdụ ubi. Site n'ịgbakwụnye peroxides organic iji gbanwee polypropylene, mgbaze agbaze nke PP nwere ike ịbawanye ụba, ịdị arọ ya nwere ike ibelata, na ikesa nkesa nke PP nwere ike ime ka ọ dịkwuo mma, na-eme ka ọ dịkwuo mma na ọnụ ọgụgụ dị elu. Ya mere, PP gbanwere site organic peroxide mmebi nwere ike ọtụtụ ebe na-eji mkpa-walled injection ịkpụzi na-abụghị kpara akwa ubi.
Ọtụtụ ihe na-emebi peroxide
Organic peroxides bụ klaasị 5.2 kemịkalụ dị ize ndụ nwere ihe siri ike maka mmepụta, nchekwa, njem na ojiji. Ka ọ dị ugbu a, enwere naanị peroxides organic ole na ole a na-ejikarị maka mmebi PP na China. Nke a bụ ole na ole:
Ihe eji eme butyl peroxide (DTBP)
Isi njirimara ya bụ ndị a:
FDA akwadoghị maka mgbakwunye na PP, akwadoghị maka mmepụta ọkwa nri na ngwaahịa ọkwa ịdị ọcha.
Ebe ọkụ ọkụ bụ naanị 6 ℃, ọ na-enwe mmetụta dị ukwuu maka ọkụ eletrik. 0.1MJ nke ike zuru ezu iji mee ka ikuku ya dị ọkụ, na-eme ka ọ dị mfe ịgbanwuo ma gbawaa na ụlọ okpomọkụ; Ọbụlagodi na nchekwa nitrogen, ọ ka nwere ike ịgbawa wee gbawaa na gburugburu 55 ℃.
Ọnụ ọgụgụ conductivity dị oke ala, na-eme ka ọ dị mfe ịgbakọ ụgwọ n'oge usoro eruba.
Ndị European Chemicals Agency (ECHA) kewara DTBP na 2010 dị ka ọkwa 3 na-ebute mkpụrụ ndụ mkpụrụ ndụ ihe nketa na enweghị ike ịkwado maka iji ya dị ka mgbakwunye na kọntaktị nri na kọntaktị kpọmkwem na ngwaahịa mmadụ, n'ihi na enwere nnukwu ihe ize ndụ nke ịkpata biotoxicity.
2,5-dimethyl-2,5-bis (tert butylperoxy) hexane (nke a na-akpọ "101")
Nke a na-emebi ihe bụ otu n'ime peroxides mbụ a na-eji eme ihe n'ubi PP. N'ihi oke okpomọkụ ya kwesịrị ekwesị yana ọdịnaya dị elu nke ụdị ikuku oxygen na-emeghachi omume, yana nkwado FDA na United States na nkwado BfR na Europe, ọ ka bụ ihe na-emebi emebi na mpaghara a. N'ihi nnukwu ọdịnaya nke ogige ndị na-adịghị agbanwe agbanwe na ngwaahịa ya na-emebi emebi, bụ nke na-abụkarị ogige na-agbanwe agbanwe na isi ísì siri ike, ihe na-esi na ya pụta na-agbaze elu PP nwere uto siri ike. Karịsịa maka ihe ndị na-agbaze agbaze ejiri na-emepụta ihe nkpuchi, mgbakwunye nke nnukwu ihe na-emebi emebi nwere ike ịkpata nnukwu nsogbu isi ísì maka akwa mgbaze agbaze agbaze.
3,6,9-Triethyl-3,6,9-Trimethyl-1,4,7-Triperoxynonane (akpọrọ ya dị ka “301″)
E jiri ya tụnyere ndị na-emebi emebi ndị ọzọ, 301 nwere arụmọrụ nchekwa dị mma na arụrụ arụ ọrụ, yana isi ísì dị oke ala, na-eme ka ọ bụrụ otu n'ime nhọrọ kachasị mma maka imebi PP. Uru ya bụ ndị a:
● Nke ka mma
The onwe accelerating decomposition okpomọkụ bụ 110 ℃, na flash point bụkwa dị ka 74 ℃, nke nwere ike n'ụzọ dị irè gbochie ire ere na flash mgbanye nke na-emebi mmadụ n'oge usoro nri. Ọ bụ ngwaahịa peroxide kacha dịrị nchebe n'etiti ihe ndị na-emebi emebi mara.
● Ịrụ ọrụ nke ọma karị
N'ihi ọnụnọ nke agbụ peroxide atọ na molecule, mgbakwunye nke otu akụkụ nke ụdị ikuku oxygen na-emeghachi omume nwere ike inyekwu radicals n'efu, na-emeziwanye arụmọrụ nbibi nke ọma.
Obere isi
E jiri ya tụnyere "Double 25", ogige ndị na-agbanwe agbanwe na-emepụta site na nbibi ya bụ nanị otu ụzọ n'ụzọ iri nke ngwaahịa ndị ọzọ, na ụdị ihe mgbagwoju anya na-abụkarị esters dị ala, na-enweghị mgbakasị ahụ. ihe ize ndụ nke imebi ngwaahịa PP n'oge nchekwa na njem, si otú ahụ na-emeziwanye nchekwa nke ọma.
Ọ bụ ezie na a naghị akwado DTBP dị ka onye na-emebi emebi maka PP gbanwetụrụ, a ka nwere ụfọdụ ndị na-emepụta ụlọ na-eji DTBP dị ka onye na-emepụta ihe na-emepụta ihe na-eme ka ọ dị elu na-agbaze PP, nke na-ebute ọtụtụ ihe ize ndụ nchekwa na usoro mmepụta na mpaghara ndị na-esote. Ngwaahịa ndị a na-esi na ya pụta nwekwara nsogbu isi ísì siri ike, na enwere nnukwu ihe ize ndụ nke ịjụ ma ọ bụ ịghara ịgafe ule mgbe a na-ebuga ya n'ahịa mba ụwa.
Ụgwọ nke ụlọ ọrụ Dongguan Liansheng Non Woven Technology Co., Ltd.e hiwere na Mee 2020. Ọ bụ nnukwu ụlọ ọrụ mmepụta ihe na-abụghị akwa na-ejikọta nyocha na mmepe, mmepụta na ahịa. Ọ nwere ike ịmepụta agba dị iche iche nke PP spunbond akwa na-abụghị kpara nke nwere obosara nke na-erughị 3.2 mita site na gram 9 ruo 300.
Oge nzipu: Nov-09-2024